# pp waves and holography

@article{Leigh2002ppWA,
title={pp waves and holography},
author={Robert G. Leigh and Kazumi Okuyama and Moshe Rozali},
journal={Physical Review D},
year={2002},
volume={66},
pages={046004}
}
• Published 2 April 2002
• Physics
• Physical Review D
We consider aspects of holography in the $pp$-wave limit of $AdS_5\times S5$. This geometry contains two $\RR4$'s, one obtained from $AdS_5$ directions, and the other from the $S 5$. We argue that the holographic direction in the $pp$-wave background can be taken to be $r$, the radial direction in the first $\RR4$. Normalizable modes correspond to states, and non-normalizable modes correspond to deformations of the boundary theory. In the strict $pp$-wave limit, there are additional non…

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